Page not found

This problem concerns ebay. After I sign on to my account and click on My ebay, the page tries to load about 3-4 times and then it gives up and says page not found. What could be the problem? Everything was fine up until Friday evening.

I have WIN XP with SP2 and I use dial up to connect. My ISP is bt/yahoo and I use their own browser. Can some one please advise?

I have tried a restore, but it seems that the problem is still there. It could be something that has attached itself to onspeed somehow. I will clarify, When it happened I got a warning from my firewall saying that an attempt by Blade Runner trojan was being made and it stopped activity for 30 minutes. I got fed up with waiting and switched off my internet connection, ran the usual virus scanner and anti spyware but found nothing. It was after that that everything happened. Any ideas?